使用 nginx 进行反向代理时永久重定向

Question

我已经设置了一个 nginx 反向代理服务器，它将 blog.xxx.com 代理到 xxx.com/blog。这是我的配置文件。

server {
    listen 80;
    root /var/www/html;
    server_name xxx.com www.xxx.com;
    
    location /.well-known/acme-challenge {
        root /tmp/letsencrypt/www;
    }
    location / {
        return 301 https://$host$request_uri;
    }
}
server {

    listen 443;
    
    server_name xxx.com;
    
    root /var/www/html;

    include /etc/nginx/snippet/ssl.conf;
    
    location /blog/ {
        proxy_pass https://blog.xxx.com;
        proxy_set_header Host blog.xxx.com;
        rewrite /blog/(.*) /$1 break;
        proxy_redirect off;
        expires -1;
        add_header Cache-Control no-store;
        proxy_read_timeout 90;
        proxy_connect_timeout 90;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-NginX-Proxy true;
        proxy_set_header Connection "";
    }

    location / {
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_pass http://xxx:8090;
    }
    
}

它工作得很好。但我还需要永久重定向blog.xxx.com。xxx.com/blog一旦我设置了重定向规则，就会发生重定向过多的情况。

有没有办法可以同时实现反向代理和 301 重定向？